organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
     alveolates Cavalier-Smith see [unranked] Alveolata Cavalier-Smith, 1991
       Phylum Ciliophora Doflein, 1901 - ciliates
         Subphylum Intramacronucleata Lynn, 1996 - amphiesmates
           Class Phyllopharyngea de Puytorac et al., 1974
             Subclass Suctoria Claparède & Lachmann, 1858 - suctorians
               Order Endogenida Collin, 1912
                 Family Tokophryidae Jankowski, in Small & Lynn, 1985
                   1 Genus Erastophrya Fauré-Fremiet, 1944
                   2 Genus Rhyncheta Zenker, 1866
                   3 Genus Choanophrya Hartog, 1902
                   4 Genus Tokophrya Bütschli, 1889
                   5 Genus Staurophrya Zacharias, 1893
                   6 Genus Allantosoma Gassovsky, 1919
                   7 Genus Pottsiocles Corliss, 1960